122 lines
4.1 KiB
Plaintext
122 lines
4.1 KiB
Plaintext
<attach event="ondocumentready" handler="parseStylesheets" />
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<script>
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/**
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* Whatever:hover - V1.42.060206 - hover & active
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* ------------------------------------------------------------
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* (c) 2005 - Peter Nederlof
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* Peterned - http://www.xs4all.nl/~peterned/
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* License - http://creativecommons.org/licenses/LGPL/2.1/
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*
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* Whatever:hover is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Whatever:hover is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* Credits and thanks to:
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* Arnoud Berendsen, Martin Reurings, Robert Hanson
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*
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* howto: body { behavior:url("csshover.htc"); }
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* ------------------------------------------------------------
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*/
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var csshoverReg = /(^|\s)(([^a]([^ ]+)?)|(a([^#.][^ ]+)+)):(hover|active)/i,
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currentSheet, doc = window.document, hoverEvents = [], activators = {
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onhover:{on:'onmouseover', off:'onmouseout'},
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onactive:{on:'onmousedown', off:'onmouseup'}
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}
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function parseStylesheets() {
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if(!/MSIE (5|6)/.test(navigator.userAgent)) return;
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window.attachEvent('onunload', unhookHoverEvents);
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var sheets = doc.styleSheets, l = sheets.length;
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for(var i=0; i<l; i++)
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parseStylesheet(sheets[i]);
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}
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function parseStylesheet(sheet) {
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if(sheet.imports) {
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try {
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var imports = sheet.imports, l = imports.length;
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for(var i=0; i<l; i++) parseStylesheet(sheet.imports[i]);
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} catch(securityException){}
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}
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try {
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var rules = (currentSheet = sheet).rules, l = rules.length;
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for(var j=0; j<l; j++) parseCSSRule(rules[j]);
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} catch(securityException){}
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}
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function parseCSSRule(rule) {
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var select = rule.selectorText, style = rule.style.cssText;
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if(!csshoverReg.test(select) || !style) return;
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var pseudo = select.replace(/[^:]+:([a-z-]+).*/i, 'on$1');
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var newSelect = select.replace(/(\.([a-z0-9_-]+):[a-z]+)|(:[a-z]+)/gi, '.$2' + pseudo);
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var className = (/\.([a-z0-9_-]*on(hover|active))/i).exec(newSelect)[1];
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var affected = select.replace(/:(hover|active).*$/, '');
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var elements = getElementsBySelect(affected);
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if(elements.length == 0) return;
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currentSheet.addRule(newSelect, style);
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for(var i=0; i<elements.length; i++)
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new HoverElement(elements[i], className, activators[pseudo]);
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}
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function HoverElement(node, className, events) {
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if(!node.hovers) node.hovers = {};
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if(node.hovers[className]) return;
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node.hovers[className] = true;
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hookHoverEvent(node, events.on, function() { node.className += ' ' + className; });
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hookHoverEvent(node, events.off, function() { node.className = node.className.replace(new RegExp('\\s+'+className, 'g'),''); });
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}
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function hookHoverEvent(node, type, handler) {
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node.attachEvent(type, handler);
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hoverEvents[hoverEvents.length] = {
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node:node, type:type, handler:handler
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};
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}
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function unhookHoverEvents() {
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for(var e,i=0; i<hoverEvents.length; i++) {
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e = hoverEvents[i];
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e.node.detachEvent(e.type, e.handler);
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}
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}
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function getElementsBySelect(rule) {
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var parts, nodes = [doc];
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parts = rule.split(' ');
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for(var i=0; i<parts.length; i++) {
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nodes = getSelectedNodes(parts[i], nodes);
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} return nodes;
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}
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function getSelectedNodes(select, elements) {
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var result, node, nodes = [];
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var identify = (/\#([a-z0-9_-]+)/i).exec(select);
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if(identify) {
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var element = doc.getElementById(identify[1]);
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return element? [element]:nodes;
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}
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var classname = (/\.([a-z0-9_-]+)/i).exec(select);
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var tagName = select.replace(/(\.|\#|\:)[a-z0-9_-]+/i, '');
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var classReg = classname? new RegExp('\\b' + classname[1] + '\\b'):false;
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for(var i=0; i<elements.length; i++) {
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result = tagName? elements[i].all.tags(tagName):elements[i].all;
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for(var j=0; j<result.length; j++) {
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node = result[j];
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if(classReg && !classReg.test(node.className)) continue;
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nodes[nodes.length] = node;
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}
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}
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return nodes;
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}
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window.parseStylesheets = parseStylesheets;
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</script> |